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Patented Apr. |6, |90l. w. C. TEMPLE.

STEAM BILER.

(Application filed July 1D, '1900.

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(No Model.)

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a' "e it n WILLIAM O. TEMPLE, OF PITTSBURG, PENNSYLVANIA, ASSIGNOR TOTHE AULTMAN da TAYLOR MACHINERY COMPANY, OF MANSFIELD, OHIO.

STEANIJHBOIILERS..

SPECIFICATION forming part of Letters Patent No. 672,425, dated. April176, 190.1.

Application tiled July 10, 1900.

T0 @ZZ whom, t may concern:

Be it known that I, WILLIAM C. TEMPLE, 0f Pittsburg, in the county ofAllegheny and State of Pennsylvania, have invented a new and usefulImprovement in Steam-Boilers, of which, the following is a full, clear,and exact description, reference being had to the accompanying drawings,forming part of this speciication, in which- Figure 1 is a verticalcentral section of my improved boiler. Fig. 2 is a horizontalcrosssection of the same. Fig. 3 is a vertical section on the line IIIIII of Fig. 2, and Fig. et is a horizontal section on the line IV IY ot'Fig. 1.

My invention relates to that class of vertical water-tube boilerswherein an upper and a lower drum are connected by sets of tubes withpartitions between the sets to direct lthe flame and gases in upward anddownward passes; and its object is to prevent accumulation of dust uponthe top of the mud-drum and also to stop short-circuiting of the gasesbeneath the partition and around the muddrum.

Heretofore in this type of boilers the gases frequently creep betweenthe lower end of the baffle-wall partition and the mud-drum and aroundthe sides of the drum and pass directly to the stack without contactingwith the tubes. This decreases the economy of the boiler and bakes thesediment in the muddrum. Moreover, where the muddrum is tightly inclosedin attempting to prevent this action the dust accumulates on the top ofthe mud-drum and piles up around the tubes, thus decreasing theheating-surface and the economy of the boiler. My invention overcomesthese difficulties; and it consists in providing dust-fines around themud-drum for the descent of l(he dust and also in placingpartition-walls at the sides of the drum to prevent short-circuiting ofthe gases to the outlet-flue.

In the drawings, 2 represents the external shell of the boiler, and 3the furnace. The boiler is composed of an upper drum 4L and a lower ormud drum 5, connected. by two sets of tubes 6 and '7. The mud-drum issupported upon separated brackets, as shown, and is spaced apart fromits inolosing walls,

Serial No. 23,127. (No model.)

so that the dust may fall through the vertical flues formed between thesupporting-brack ets, the walls of the 1n ud-dru m chamber, and themud-drum itself into the space below it. Between the sets of tubes 6 and7 is placed a vertical partition 8, which extends from the top of themud-drum to a point some distance below the upper drum, and thispartition is provided with downward side extensions 9 9, 6o which arejoined to a lower partition 10, eX- tending across the lower head of themuddrum. This lower partition 10 is provided with an opening having ahinged door 11, which closes, so as to prevent any gases passing throughthe opening when it is in normal position. 12 is a stack-due leadingfrom the base of the tubes 7 to the stack 13. The base portion of thestack is provided with a door of lthe water-supply.

When'the boiler is in operation, the flame and gases from the furnace 3pass in among the lower ends of the tubes 6, and, rising above thepartition, descend through the tubes 7 and pass out from among theirlower ends to the stack. The partitions or shields surrounding themud-drum prevent the gases from cutting across directly to thestack-line, while the collecting dust falls around the muddrum into thechamber below it, and the full heating effect of the gases is thusobtained.

The advantages of my invention result from the use of the dustpassagesaround the mud-drum and from the partition for the mud-drum chamberwhich divides it into two separate chambers, thus preventing short.circuiting of gases and baking of sediment in the drum and thecollection of dust among the tubes.

Many changes may be made in the form and arrangement of the boilerwithout departing from my invention.

I claim- Y A 1. A vertical water-tube boiler having au upper drum and alower drum connected by ICO sets of tubes, a partition between the setshaving a downward extension constructed t-o pass on either side of themud-drum and under the same, and a source of heat communicating with theheating-space on one side of the partition; substantially as described.

2. A water-tube boiler having a mud-drum Chamber provided with apartition surrounding the mud-drum, and a door in the parti tion;substantially as described.

3. A vertical water-tube boiler having an upper and a lower drumconnected by sets of tubes, a partition between the sets, a source ofheat communicating with the heating# space on one side of the partition,an outlet I5 In testimony whereof I have hereunto set zo my hand.

WILLIAM C. TEMPLE.

Witnesses:

W. W. DARLEY, G. I. HoLDsHIP.

